en Sprague Bumble bee and Black Beauty (Telecap) PIO and Mylar X-ray pics

Updated on February 1, 2020 | 280 Views all
0 on February 1, 2020

a friend took these C-arm Xray image intensifier films for me. as you can see, they are

PIO black beauty .022uf 400v x2

Mylar black beauty .022uf 400v

and, PIO bulbe bee .022 uf 400v

from the left to right

another xray picture with a bit of contrast adjustment on the machine

 

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  • en this CTS 1M potentiometer w/spst switch looks right for 5F1

  • Never used. Nylion shaft – no washers or nuts. 1377940 600-01-33. AUDIO Taper 10% at center position. Lot of 10.

     

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  • en Yokomo MR-4BX

  • MR-4BX series has been produced for only a couple of years. the first version came at ’06 and replaced with B-Max4 which was different from previous yoke buggies at ’08.

    MR-4BX series is like the last blood of traditional Yokomo to me. and I see the same blood on Jconcepts BJ4. 

    a few prototypes on Japanese magazines were not far from MX-4 YMP until 2004. they put a slipper clutch, moved the motor mount forward, put B4 rear arms and losi style steering knuckles, and so on.. through early ’06
    my friend who has been working with Yokomo and other japanese rc companies told me their CNC machine was never stopped for a couple of years to make new prototype parts. I know it never stopped before MR-4BX. but more than a few MR-4BX prototypes have spotted on Yatabe arena for years.
     

    I have managed to get a nicely used Worlds edition last month. and took some pics with my factory edition. they both came at ’07.

     

    the differences between them are main chassis, F/R shock towers, top deck(s), steering, rear bulkhead, and a few misc parts

     
     
    Front End

     

    MR-4BX Worlds came with a new camber mount which allows only the longest upper rod setup. also the steering is different than previous 2 versions

    this new camber mount can be installed on older versions as well

     
    the original and Factory edition’s front tower provide 6 points of upper rod mount position. the tower is compatible with the original through Worlds. and the inside position provides pretty much same result as Worlds’ front camber mount
     

     

     
     
    Steering

     

    the steerings are quite different. I hope I can feel the difference while I’m running this Worlds edition. but, didn’t have a chance so far.

     

     

    this steering was introduced with MX-4. prototype MX-4 still had older servo saver. and the first time I saw this was in MX-4 kit.

    but the difference is the angle. this steering system on MR-4BX is tilted for better handling.

     

     
     
    Chassis
     
    this 2 piece structure was came from the prototype and applied to the production models through the 1st and Factory edition. but Worlds edition came with 1 piece chassis

     

    MR-4BX Worlds came with this 1 piece chassis with 2 extra holes for new steering system. please ignore the stainless screws on the Factory chassis. I’d go back to the black steel screws.

     

     
     
     
     
    Top Deck

    the top deck, now it covers the rear belt. and new camber mount is here

    Factory edition had 2 piece top deck like the original version. but the rear piece was improved that older one has clearance problem with the belt

    the rear top deck from the ’06 original version
     
     
    Rear Shock Mounting

    there were a few guys tried this before Worlds edition came. the shocks were moved to the back end of the car.

    also they put a camber mount like the front end

    the original and Factory edition had same suspension geometry. the shocks can be moved to the back end with this stock mount plus a few tricks

    the new aluminum part which holds the the shock tower is changed along with new bulkhead and camber mount

     

     

     

    related links
    http://www.oople.com/rc/photos/reviewbx/index.html

    http://www.oople.com/rc/photos/review501x/page08.html

     
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  • en QURE – community title design

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  • en LSD – No New Friends (Official Video) ft. Labrinth, Sia, Diplo

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  • en Tecumseh

  • Tecumseh, one of the greatest men ever to be born on the American continent. A Native American, war chief and statesman he was essentially a Native American George Washington. He saw his family killed by the white settlers and the soldiers of the new United States of America yet he refused to kill women and children.

    Among the tribes, there was no concept of Indians as a group i.e. you were a Shawnee or Mohawk, not an Indian. Indeed, even the whites were seen as “tribes” the British tribe, French tribe, Spanish tribe or, worst of all from their perspective, the American tribe. Tecumseh was a visionary and envisioned a Native American confederacy from the Great Lakes to the Gulf.

    He sided with the British in the War of 1812 only to be abandoned after the end of the war. Abandoned to the Americans who destroyed him and his people.

    Please note: No nation is all good or all evil. One must acknowledge the failings as well as the successes of a nation to truly understand it.

    #History #CoreBeliefs #Philosophy #NativeAmericans #Courage

    (Picture: Portrait of Tecumseh – Nineteenth-century portrait by Benson John Lossing, after a pencil sketch by Pierre Le Dru)

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  • en one beautiful tweed deluxe 5C3 came from Feb. 1955

  • it’s one of the tweed amps led me to this tweed world. it’s typical 5C3 with two of 6sc7

     

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  • en Question to the Slowbean community. (Stone / rock processing)

  • Hi community, since a long time I’m pondering about two topics that interest me. Stones / rocks and their industrial processing. If I want to cut rocks or slice stones in small pieces I have to use large machines, the energy consumption of such stone cutting machine is way too high for somebody who would just start to cut / slice rock. So, my question is: Do you have any ideas, thoughts or know about eco-friendly techologies which are energy efficient for cutting rocks into small slices? Every input regarding this topic is welcome.

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  • en NPN Germanium transistor list for Fuzz pedals

  • My interest in fuzz pedal came from JMI Tone Bender III reissue which belongs to a friend. this pedal has 3 of OC75 glass tube transistors.

    And, unfortunately, My Sola Sound Bum Fuzz came with 3 of NPN transistors while OC75 is PNP type. then found this web page with germanium and silicone transistor lists

    http://vintageradio.me.uk/info/radiocon_data_trans.htm

    There are 26 of germanium NPN transistors from the data sheets

    ASY28, ASY29

    2N388, 2N388A

    2N1302, 2N1304, 2N1306, 2N1308,

    OC139, OC140, OC141

    AD161

    AC187

    NKT713, NKT773, NKT774, NKT781

    2SD72

     
    Black glass tube NPN transistors are OC139, OC140, OC141 from them.

     
    OC75 is like this according to this web page on alltransistors.com

    Type Designator: OC75 (PNP)

    Maximum Collector Power Dissipation (Pc): 0.125 W

    Maximum Collector-Base Voltage |Vcb|: 20 V

    Maximum Collector-Emitter Voltage |Vce|: 20 V

    Maximum Emitter-Base Voltage |Veb|: 10 V

    Maximum Collector Current |Ic max|: 0.01 A

    Transition Frequency (ft): 0.1 MHz

    Collector Capacitance (Cc): 50 pF

    Forward Current Transfer Ratio (hFE), MIN: 55

    And, for OC139, OC140 is

    Vcb: 20 V / 20 V

    Vce: 20 V / 20V

    Forward Current Transfer Ratio (hFE), MIN: 40 / 75

     
    I’m going to try OC139. simply beccause, OC139 is cheaper than OC140 on ebay. and I’m wondering how Transition Frequency differences work with Fuzz. I’ll update in a few weeks

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  • en a friend’s beautiful Les Paul

  • all the black plastic parts have changed with vintage correct white ones. this Joe Bonamassa burst #70 has beautiful top and dark back with ’59 profile neck and Burstbucker #2 and #3. the orignal 50’s burst Les Paul guitars mostly had 7.5k to 8.4k pickups and many of them had hotter ones on the neck position.

    Gibon’s burstbucker was made after the original PAF pickups which had unbalanced bobbins. I’d put #3 on the neck and #2 on the bridge. personally the best PAF replica was Timbucker from Tim white I got at 2003 with my Brazilian freboard 59 historic. and, at the time a few friends on Lespaulforum.com tried Seymour Duncan Custmop Shop PAF replicas and it was a great pleasure to listen them.

    The same Duncan Custom shop PAF pickups are coming for this Les paul. and I believe he’d love them over burstbucker pickups

    more vintage correct parts like truss rod cover and square jack plate are coming as well.

    This Pin was discovered by HyungSub Kim. Discover (and save!) your own Pins on Pinterest.

     

     

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  • en Tamiya Tamtech Buggy Champ

  • I’m running this small version of Buggy Champ – Rough Rider for years. yes, it’s small and cannot run on the bumpy tracks.

    and I watched it’s not bad on the the rally circuit where I’m running my old RC10 and 834B runners.

     
     
    I started from finding a better motor for this 1/16 Buggy Champ. sport-tuned motor from tamiya was the most easy to find. but it turned out not much better than the stock motor.
     
    they released a better sport-tuned SPT recently. and, I was told it was good. I’m thinking getting one at some point. 
     
     

    this tamtech champ came with the plastic spring dampers. buggy champ runs like tamiya grasshopper with the stock shocks. actually it runs better than grasshopper.

    google found me Losi Mini-T shocks weeks or months ago. an I’m running with the shocks. losi shocks turned this tiny champ into a racer.

     
    Losi shocks are slightly shorter than stock ones. and this length is better on the tracks and my living room.
     
    Losi front shocks have almost twice bigger stroke with a dead center. and, this simple trick with shrink tube is working great. 
     
     
    then I came back to the motor.
    a friened who is an expert on the small motors told me to find “Speed 300 6V” motor from Graupner or GWS. 
     
    Speed 300 on ebay.de
     
    ElectricFly  T-370
     
    but the shipping charge for one single motor was overkill. I found this for less than $10 include the postage from somewhere.
     
     
    this E-sky 370 motor is cheap and can be found everywhere. it has this 1/10 style endbell as you can see. the size is identical to the stock 370 motor.
     
     
    the torque and speed are great for the scale. and it turned out this motor needs too much juice for the size. I might need more or better batteries.
     
    I ran with this setup for a while, then I went to Tamtech SPT motor and new shell. SPT is much better than older sport tuned motor in every way. I have brushless in my mind too. but the price is an issue for me.
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